@Override public int compare(Integer s1, Integer s2) { return Serial.compare(s1, s2); } };
public static final boolean ge(int s1, int s2) { return compare(s1, s2) >= 0; }
public static final boolean gt(int s1, int s2) { return compare(s1, s2) > 0; }
public static final boolean lt(int s1, int s2) { return compare(s1, s2) < 0; }
public static final boolean le(int s1, int s2) { return compare(s1, s2) <= 0; }